Pump



FIG. 1 is a perspective rear view of a pump showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a left elevational view thereof; and,

FIG. 7 is a right elevational view thereof.

The broken lines are included for the purpose of illustrating portions of the pump that form no part of the claimed design. 

CLAIM The ornamental design for a pump, as shown and described. 